MCQ
A triplet codon means
- ✓A sequence of three nitrogen bases on $mRNA$
- BA sequence of three nitrogen bases in $tRNA$
- CA sequence of three bases in $rRNA$
- DThe presence of only three bases in $mRNA$
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Choose the correct option for $A, B$ and $C$
$I.$ Identification of $DNA$ with desirable genes
$II.$ Gene transfer
$III.$ Maintenance of $DNA$ in host and gene cloning
$IV.$ Introduction of $DNA$ into host to from recombinant $DNA$
Which of the following represents the correct sequence of steps?